page_title: .300 AAC Blackout
hierarchical_section_title: .300 AAC Blackout
caption_attribution_description: English: 300 AAC BLACKOUT 125 grain plastic tip, 300 AAC BLACKOUT 125 grain match, 300 AAC BLACKOUT 220 grain subsonic, 5.56mm NATO, 7.62x39mm
context_page_description: The .300 AAC Blackout, also known as 7.62×35mm is an intermediate cartridge developed in the United States by Advanced Armament Corporation for use in the M4 carbine. Its purpose is to achieve ballistics similar to the 7.62×39mm cartridge, or even more similarly, the 7.92×33mm Kurz cartridge in an AR-15 while using standard AR-15 magazines at their normal capacities. 300 BLK ammunition cannot be used in a rifle chambered for 7.62×40mm Wilson Tactical. It is mainly derived from the .300 Whisper concept, but differs in having been submitted to the SAAMI.
context_section_description: The .300 AAC Blackout (designated as the 300 BLK by the SAAMI and 300 AAC Blackout by the C.I.P.), also known as 7.62×35mm is an intermediate cartridge developed in the United States by Advanced Armament Corporation (AAC) for use in the M4 carbine. Its purpose is to achieve ballistics similar to the 7.62×39mm cartridge, or even more similarly, the 7.92×33mm Kurz cartridge in an AR-15 while using standard AR-15 magazines at their normal capacities. 300 BLK ammunition cannot be used in a rifle chambered for 7.62×40mm Wilson Tactical. It is mainly derived from the .300 Whisper concept, but differs in having been submitted to the SAAMI.
caption: The 300 AAC Blackout plastic tipped, left, compared to 300 AAC Blackout 125 gr match, 300 AAC Blackout 220 gr subsonic, 5.56×45mm NATO, and 7.62×39mm.
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